In the above example, the elif conditions are applied after the if condition. Python will evalute the if condition and if it evaluates to False then it will evalute the elif blocks and execute the elif block whose expression evaluates to True. If multiple elif conditions become True, then ...
If user enters-2, the conditionnumber > 0evaluates toFalse. Therefore, the body ofifis skipped from execution. Indentation in Python Python uses indentation to define a block of code, such as the body of anifstatement. For example, x =1total =0# start of the if statementifx !=0: tot...
That is how nested if condition in Python works. Shorthand If and If Else in Python Shorthand if and if else is nothing but a way to write the if statements in one line when we have only one statement to execute in the if block and the else block. An example for shorthand if in ...
elif … sequence is a substitute for the switch or case statements found in other languages.可以有多个elif语句，关键词elif是else if的缩简写，用于缩减语句长度。if … elif … elif … 与其他语言的switch或case语句的作用相近。if condition_1:statement_block_1 elif condition_2:statement_block_2 else...
Learn how to use Python's if __name__ == "__main__" idiom to control code execution. Discover its purpose, mechanics, best practices, and when to use or avoid it. This tutorial explores its role in managing script behavior and module imports for clean an
Elif Conditional Statement in Python Elif is a rather unique term as other programming languages don’t use it. Other programming languages use"else if "to put up one more condition. While Python combines"else and if "and makes it an"elif "conditional statement. The usage of the"elif "stat...
By checking the value of name using theif __name__ == '__main__'condition, you can control which code is executed in different scenarios. If the condition is True, then the indented code block following the conditional statement is executed, while if it is False, the code block is ski...
ifcondition:code_block 1. 2. 其中,condition是一个表达式,用于判断条件的真假。如果condition为真,则执行code_block中的代码;否则,跳过code_block,继续执行后续的代码。 if语句中的多条代码执行 当我们需要在条件满足时执行多条代码时,可以使用缩进来表示代码块。在Python中,缩进是非常重要的,它决定了哪些代码属于...
Python if 语句 Python3 实例 以下实例通过使用 if...elif...else 语句判断数字是正数、负数或零: 实例(Python 3.0+) [mycode3 type='python']# Filename : test.py # author by : www.runoob.com # 用户输入数字 num = float(input('输入一个数字: ')) if num >
After a clear explanation of all code snippets showing how the if-not conditional statement works in Python, we conclude that the if-not statement always negates the output of the if statement. Based on the condition assigned, it will either return the "if not" part or the "else" part ...